Keeping a check on your car’s condition is among the essential things each vehicle owner must do. This not only extends your car’s life but also improves its performance. Car parts start showing signs and symptoms before they completely fail. However, regular maintenance can help you identify the problem before it’s too late. Just like other car parts, the EGR (Exhaust Gas Recirculation) system also fails with time. Here is the list of common symptoms of a bad EGR valve system.
Bad EGR Valve Symptoms
The EGR valve is controlled by the control unit or electronic control unit (ECU), which is responsible for receiving the parameters measured by the different types of sensors.
The EGR valve is one of the essential elements of your car’s anti-pollution system. It allows the recycling of exhaust gasses within the engine to limit the quantity of CO2 released by the exhaust pipe. It is compulsory equipment on all car engines with a service life of 160,000 km.
Following are some of the common symptoms of EGR system malfunction that you should be aware of.
Strange Noises From the Engine
Hearing irregular sounds and strange engine noises can be a symptom that indicates you have a dirty EGR valve. In these cases, the noises will be similar to small dry knocks, which occur when the engine is running. These noises occur when the temperature increases in the combustion chamber.
Overheating Car Engine
Another easy symptom to detect is engine overheating. In addition to controlling and reducing emissions, the EGR valve is also responsible for cooling the combustion chamber. Therefore, once it is dirty, the cooling of the combustion chamber will be compromised, resulting in the engine overheating. Here are some other causes of overheating car engines.
Excessive Fuel Consumption
With the existence of a problem with the EGR valve, there are not only significant increases in pollutant emissions but also some loss of engine power, as well as an abnormal increase in consumption.
If you notice that the engine requires more fuel than usual, try to find out if there are defects in the EGR part and the reasons behind the high fuel consumption.
Check Engine Light Turn On
The car instrument cluster is an excellent aid in detecting car problems. In case you have an EGR system malfunction, the check engine light comes on the instrument panel and makes it easier to identify the problem.
It is best to seek the opinion of a specialist, to identify whether the engine problem is caused by a dirty EGR valve or for another reason.
In case the problem is with the valve in question, there are two solutions you should proceed with: clean the EGR valve or replace it with a new one. It is recommended that you make this decision according to the opinion and experience of an expert.
Engine Rough Idle
Other bad EGR valve symptoms include a sudden vehicle stalling when the engine is idle. This happens when the EGR system is constantly open the flow of exhaust gasses going into the manifold.
EGR Valve Failure Causes
Over time, the EGR valve may begin to show symptoms. The causes of a bad EGR valve system are:
- A carbon deposit: Carbon and dirt deposits can lodge in the EGR valve, blocking its operations and reducing the car’s overall performance.
- A faulty throttle body: This regulates the air inlet into the combustion chambers. The malfunction of the throttle body can also affect the EGR valve. Here are the common symptoms of a bad throttle position sensor.
- An engine oil leak: This happens when the gasket of the cylinder head isn’t tight.
With this, we conclude our guide on the symptoms of a bad EGR valve. With the existence of a problem with the EGR valve, there are not only significant increases in pollutant emissions but also some loss of power from your car’s engine, as well as an abnormal increase in consumption.
If you notice that the engine requires more fuel than usual, try to find out if there are defects in the EGR part.
Besides the EGR system, if other car parts are also failing and increasing the repair cost, then consider replacing it with a well-maintained used car in the UAE. You can browse through the listings and find a range of options as per your needs.
If this guide helps you in solving the issue, stay in touch with the UAE’s popular car blog for more.
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